221012210211102 has 128 divisors (see below), whose sum is σ = 535897571328000. Its totient is φ = 67259327274720.

The previous prime is 221012210211041. The next prime is 221012210211103. The reversal of 221012210211102 is 201112012210122.

221012210211102 is a `hidden beast` number, since 221 + 0 + 1 + 221 + 0 + 211 + 10 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012210211103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6935518 + ... + 22138785.

It is an arithmetic number, because the mean of its divisors is an integer number (4186699776000).

Almost surely, 2^{221012210211102} is an apocalyptic number.

221012210211102 is an abundant number, since it is smaller than the sum of its proper divisors (314885361116898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221012210211102 is a wasteful number, since it uses less digits than its factorization.

221012210211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29074603 (or 29074597 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221012210211102 its reverse (201112012210122), we get a palindrome (422124222421224).

The spelling of 221012210211102 in words is "two hundred twenty-one trillion, twelve billion, two hundred ten million, two hundred eleven thousand, one hundred two".